adolescence
1516
1718
academic
american
book
bookshelf
busy
caucasian
classroom
clever
cognition
desk
education
european
exam
french
german
girl
high school
indoor
knowledge
learning
leisure
library
looking
person
pupil
reading
research
russian
school
shelf
sitting
smart
standing
student
studying
table
teen
teenager
test
textbook
thinking
youth